FABS(3) | Library Functions Manual | FABS(3)

# NAME

fabs, fabsf — floating-point absolute value function

# LIBRARY

Math Library (libm, -lm)

# SYNOPSIS

#include <math.h>

double
fabs(double x);

float
fabsf(float x);

# DESCRIPTION

The fabs() and fabsf() functions compute the absolute value of a floating-point number x.

# RETURN VALUES

The fabs() function returns the absolute value of x.

# SEE ALSO

abs(3), ceil(3), floor(3), math(3), rint(3)

# STANDARDS

The fabs() function conforms to ANSI X3.159-1989 (“ANSI C89”).

May 2, 1991 | NetBSD 7.2